diff --git a/src/main/java/it/gov/pagopa/payhub/auth/service/a2a/AuthorizeClientCredentialsRequestService.java b/src/main/java/it/gov/pagopa/payhub/auth/service/a2a/AuthorizeClientCredentialsRequestService.java
index 5224814a..e40d6537 100644
--- a/src/main/java/it/gov/pagopa/payhub/auth/service/a2a/AuthorizeClientCredentialsRequestService.java
+++ b/src/main/java/it/gov/pagopa/payhub/auth/service/a2a/AuthorizeClientCredentialsRequestService.java
@@ -10,7 +10,7 @@
 @Service
 @Slf4j
 public class AuthorizeClientCredentialsRequestService {
-	private final static String PIATTAFORMA_UNITARIA_CLIENT_ID_PREFIX = "piattaforma-unitaria_";
+	private static final String PIATTAFORMA_UNITARIA_CLIENT_ID_PREFIX = "piattaforma-unitaria_";
 	private final ClientService clientService;
 	private final ClientMapper clientMapper;
 	private final String piattaformaUnitariaClientSecret;
diff --git a/src/test/java/it/gov/pagopa/payhub/auth/service/a2a/AuthorizeClientCredentialsRequestServiceTest.java b/src/test/java/it/gov/pagopa/payhub/auth/service/a2a/AuthorizeClientCredentialsRequestServiceTest.java
index cedf7bc6..937ac58f 100644
--- a/src/test/java/it/gov/pagopa/payhub/auth/service/a2a/AuthorizeClientCredentialsRequestServiceTest.java
+++ b/src/test/java/it/gov/pagopa/payhub/auth/service/a2a/AuthorizeClientCredentialsRequestServiceTest.java
@@ -14,8 +14,6 @@
 
 import java.util.Optional;
 import java.util.UUID;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 @ExtendWith(MockitoExtension.class)
 class AuthorizeClientCredentialsRequestServiceTest {